document.write( "Question 973893: 1) What is the remainder when 2^31 is divided by 10?
\n" ); document.write( "2) What is the remainder when 2^69 is divided by 5?
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #595922 by Boreal(15235)\"\" \"About 
You can put this solution on YOUR website!
2 raised to a power goes 2,4,8,6
\n" ); document.write( "to the 9th power 512, then 1024, then 2048, 4096.
\n" ); document.write( "Divide the exponent by 4 and see what is left over
\n" ); document.write( "2^31 is 2^28 (which ends in 6). The next three end in 2,4,and 8. The remainder will be 8.\r
\n" ); document.write( "\n" ); document.write( "2^69 will have 17 repeats of the pattern and will end in 2 for 2^69. The remainder will be 2, when divided by 5.
\n" ); document.write( "
\n" );